Wheel-rim for pneumatic tires.



No. 880,332. PATENTED FEB. 25, 1908.

G. S. SCOTT.

WHEEL RIM FOR PNEUMATIC TIRES. APPLICATION FILED HAR.19.1907.

'rarnivr @TFFICE.

CHARLES S. SCGTT, OF CADIZ, OHI O, ASSIGNOR TO FRANK A. SEIBERLI NG, OF AKRON, OHIO.

.lil'o. 880,332.

Specificatlon of Letters Patent.

mEIQ-RIEE FOR PNEUMATIC TIRES;

.Eatentecl Feb. 26, 1908.

Application filed March 19. 1907. Serial No. 363.269.

To all whom it may concern:

Be it known that 1, CHARLES S. Scorr, a

- citizen of the United States, and resident of Cadiz, Ohio, have invented a new and useful Improvement in /v'heehltims for Pneumatic Tires, of which the. following is a specification.

lilyinvention relates to a rim construction for meuma'tic tires for heavy vehicles, Whether these be of the so-called cle'ncher or fineXtensible-selv ty e, by which the tire may be readily removeai when deflated,

and, on the other hand, the ports of the rim p the L-shaped ugs can be made to fit the side when assembled are automatically seated, locked into, and held in positionfby the iufie ';ion of the tire.

lvly invention is an improvement on the construction covered by my Patent No. 816,884, granted April 3, 1906, for detachable pneumatic tires. described and claimed, a vehicle-wheel rim having a depressed groove near its detaching edge, in which groove fits a split locking ring which locking ring is passed over the outer edge of the groove and is sprung into the groove to form an abutment for the rim flange, which annular and inextensible but detachable. The tire shoe is held in place 'by the incxtensible rim iiange and this in turn is held in place by the split locking ring which is sprung into the groove. To detach the pneumatic tire, the locking ring is sprung out oi" the groove, the annular rim flange comes oil' the rim and the tire is accessible. All this has been described in my prior patent. It is sometimes necessary for a short time, however, to havethe vehicle run on the tire even when this is in a deflated condition. In this case the pressure, due 'to the resiliency of the material of which in. e the shoe is. com= posed; acting against the rim flange, presses the rim flange against the s'ilit locking ring with a power insuilicient to old the locking ring in its groove, and it happens, at snch times, that this split locking ring, through the action of centrifugal force, files out of the groove to the d anger or the bystander. It is also possible that forces may be brought into the split locking ring. Those lugs register with a recess in the endlesslrim flange thus in this patent l have invention; and Fig. 2 is a sectional perspecpreventingmotion of the locking ring in a direction radial to the wheel, even if the tire be deflated. I further provide a projection or projections on the locking ring to register radially with a recess in therirn thus preventing motion of the locking ring in a circumferential direction. In my preferred construction I secure two L-shape'45l lugs to the ends of the split locling rin onearm of each L passing laterally throng it-he recess in the endless flange, and the other arm of, each L passing radiallythrou -h the recess in'the rim. Since faces of the groove and the top face of the rim near the groove, it will be seen that an exceedingly firm, compact and rigid structure is produced.

In the drawings,-Figure 1 is a cross-sew tion of a wheel .rim and tire embodying my live view showing the rim flange on the rim and the locking ring oil the rim but ready to be placed thereon. The felly A has a rim 8 with an annular raised'flange B against which. may abut a de tachahle annular flange C. Near the detach ing edge, the rim B is supplied with a depressed groove B into which may be sprung the split locking ring D supplied with an L- shaped lug 1) having a lateral arm D and a radial arm 1). The incxtensiblc rim flange C is supplied with a recess C" for engaging with the lateral arm I) of the L-shaped lug D. I naturally prefer to use 0. lug D. on each end of the split locking ring D and to have these two lateral arms D fit With some snugness into the recess C on the rim flange C The radial arm D of the l..-shaped lug D passes into a recess B in that portion of the rim B which defines the groove B. The inside surface ofthe l..-shaped lug D fits the adjacent corner of the groove so that a compact structure is obtained.

It will now be readily understood that in order to assemble the parts, the rim flange C is first put into place whereupon the inner tube with its tire shoe is'slid upon the rim. The rim flange C is thenmade to slide over the groove B? and onto the rim. The look ing mm D is t e'reupon sprung into thegroove D, the arms D 'oi the lugsl) registering with the recessiaind the inner faces of the lug fitting against the corner of the rim; Care having been taken to place the recess (3 op osite the laterally extending lugs D, the inlihtion of the tire will new force the rim Q tsetse flange C against the locking ring D, thus bringing the recess 0 into engagement with the lugs D. It is however equally feasible to have the operatorslide the rim flange 6 D being thus held immovable, the split loc Iing ring is held in its groove. Furthermore the en agement of the radial lug D with the recess having a depressed 8 prevents any motion of the locking ring in a circumferential direction and as the rim flange C is in effect rigidly connected to the locking ring inva, circumferential direction,

it follows that circumferential niotiozi of the rim flange C is also prevented. V

The present ap llcetion covers features of construction not lsclosed in my pending application No. 361 ,220, filed March 8, 1907.

I claim, 1. The combination of a vehicle wheel rim roove near its detaching edge, an mextenslb e um flange sl dmg over the groove onto the e. sylitilocking ring rung" into the groove, and e redial PEOjGG- tion rigidly secured to the locking nng e n ging c recess in the groove to erevent clrmi'erentml' mot-1cm, substantially as described.

heving e deptessed 2. The combination of e. vehicle wheel rim roove nee TBS detaching ge,;:2tn inexteneib e me. flange sliding over the groove onto the mm, e split locking ring 44} sprung intothe groove, end en t.-eheped log on the end oft-he tucking ring engaging 9, recese' in the g oove and a recess in the rim flange, substantially es descg'ibed,

having edepressed roove near its detaching 3. The comhinatioh of a, vehicle wheel rim edge, en inextensib e rim flange sliding ever t the groove onto the rim, :1 eplit locking ring sgruh ninto the groove, and s a pen of L epeil Inge on the ends ofthe'locking ring 5,

enge 'ing with a recess in the rim and m the 1mm scrzbed.

ehge respectively, substantially as de- In testilnony whereof I heme signed my name to this specification in the presence of two subscnbmg witnesses.

CHAS. S. SCOTT.

Witnesses: i

' O. M. OSBURN,

J. G. Cent, 

